9 



gives a brief summary of this work and suggests a series of co-op- 

 erative tillage experiments embodying the Jiiethods that are beheved 

 to liave contributed to so high a degree of success on the Station 

 grounds. It may not l)e practicable in every case to secure all the 

 conditions that are thmight desirable, hence the experiment is 

 arranged in six parts, any number of which may be combined in 

 the ex})eriment as circumstances permit. These are : 



No. 1. Autumn vs, spring plowing. 



]!^o. 2. Twice plowing vs. once plowing. 



No. 3. Early vs. late spring plowing. 



No. 4. Deep planting and liarrowing before plants are up vs. 

 shallow^ planting and without working till plants are well up. 



No. 5. Prolonged, frequent, level tillage vs. ''laying by" at third 

 cultivation. 



No. 6. Protection against blight vs. protection against beetles 

 only. 



Circular No. 18, setting forth this work more in detail, will l)e 

 sent upon rerpiest and blanks for reporting results will be forwarded 

 to those wdio undertake the work. The practical value of these 

 experiments is believed to be large and it is hoped that many will 

 undertake them. 



Varietal Experiments avith Potatoes. 



Potato growers know^ very well that yield is often much affected 

 by the variety planted. Not infrequently a difference of 50 to 100 

 per cent will result fi-om different varieties planted side by side and 

 treated every way alike. A given variety will yield very differently 

 in different localities and there is quite a marked tendency for all 

 varieties to " run out " or become reduced in productivity. The 

 selection of varieties is, therefore, an ever present question with the 

 potato grower and one upon which his profits largely depend. 



T^he College has arranged to send to a limited number of farmers 

 about one half peck of each of a number of varieties of potatoes 

 to be tested on their soil. These varieties will be such as have 

 given indications of being valuable in certain parts of the State, 

 but have not been very widely disseminated. These varieties are all 



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